Reasons For

The Optoma ZW212ST is a two VGA (D-Sub) port projector, whereas the Panasonic PT-RZ470 only has one VGA (D-Sub) port.

Marginally quieter noise level
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The Optoma ZW212ST has a noise level of 34dB, however the Panasonic PT-RZ470 is a 35dBdB noise level projector (1dB louder).
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The noise level of the projector is the amount of noise that the projector makes (caused by the cooling fan inside the projector) when it is running.

A lower noise level means that the projector will be quieter when it is running. This means that you will be able to appreciate the quieter parts of films better without the background noise of the projector running.

2 Reasons For

Three hundred and ninety times lighter
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The Panasonic PT-RZ470 has a weight of 11kgg, however the Optoma ZW212ST is a 4.3kg heavy projector (4.3kg heavier).

Vastly better expert reviews

Based on 1 expert review, the average review score of the Panasonic PT-RZ470 is 90%, however the average rating of the Optoma ZW212ST is 65% (based on 2 reviews).

Reasons Against

3 Reasons Against

Vastly heavier
Edit

The Optoma ZW212ST has a weight of 4.3kg. That's 4.3kg heavier than the Panasonic PT-RZ470 (11kgg).

Not currently available

This projector does not seem to be currently available.
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Vastly Lower expert review Score

The Optoma ZW212ST's average expert rating is only 65%, however the Panasonic PT-RZ470's is 90% (based on 1 review).

2 Reasons Against

Only one VGA (D-Sub) port
Edit

The Panasonic PT-RZ470 is a one VGA (D-Sub) port projector, whereas the Optoma ZW212ST only has two VGA (D-Sub) ports.

3% louder noise level
Edit

The Panasonic PT-RZ470 is a 35dBdB noise level projector. That's 1dB louder than the Optoma ZW212ST (35dBdB).
Read more

The noise level of the projector is the amount of noise that the projector makes (caused by the cooling fan inside the projector) when it is running.

A lower noise level means that the projector will be quieter when it is running. This means that you will be able to appreciate the quieter parts of films better without the background noise of the projector running.